Let’s play a game of mental association. I say “Joseph Campbell.” You say, “Hero with a Thousand Faces.” If I ask, “Which of Campbell’s ideas is the most influential?” There’s a good chance you’ll say...

In the Zoroastrian religion Nowruz, the new day, is perhaps the most important day on the Zoroastrian calendar (it also marks the Persian new year) and is celebrated on, or near, the spring equinox. Much of...